%0 Journal Article %T COMPARATIVE PRODUCTIVITY OF SUNFLOWER HYBRIDS UNDER THE APPLICATION OF GROWTH BIOSTIMULANTS UNDER THE CONDITIONS OF SAMARA REGION %A Kiseleva, L.V. %A Vasin, V.G. %A Zhizhin, M.A. %K sunflower, hybrids, growth biostimulants, Aminokat, Raikat Razvitie, Kelkat boron, productivity, oil content %J Vestnik of Kazan State Agrarian University %D 2020 %N 14 %P 4 %I Kazan state agrarian University